Nagstamon is a Nagios status monitor application.
Nagstamon’s automatic request to check for updates includes plaintext username and password information for one of the monitor servers that the Nagstamon instance connects to.
A remote attacker could eavesdrop on this request and gain user credentials for a monitor server.
There is no known workaround at this time.
All Nagstamon users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose
">=net-analyzer/nagstamon-0.9.11_rc1"